﴿ أَفَلَمْ يَسِيرُوا۟ فِى ٱلْأَرْضِ فَتَكُونَ لَهُمْ قُلُوبٌۭ يَعْقِلُونَ بِهَآ أَوْ ءَاذَانٌۭ يَسْمَعُونَ بِهَا ۖ فَإِنَّهَا لَا تَعْمَى ٱلْأَبْصَٰرُ وَلَٰكِن تَعْمَى ٱلْقُلُوبُ ٱلَّتِى فِى ٱلصُّدُورِ ﴾

“Have they, then, never journeyed about the earth, letting their hearts gain wisdom, and causing their ears to hear? Yet, verily, it is not their eyes that have become blind - but blind have become the hearts that are in their breasts!”

�Indeed, it is not the eyes that become blind, but it is their hearts that become blind within the breasts.He said:Is it not true that with the light of the heart�s insight (nūr baṣar al-qalb) a person can overcome desire and lust? But when the heart�s sight is blind to what is within it, lust will overcome him and heedlessness (ghafla) will [afflict] him at regular intervals. Consequently his body will stray into sin without being guided to God under any circumstances.His words, Exalted is He: